In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D". 

[header] How to apply for social security survivor benefits for a child [title] Understand eligibility. [step] In order to be eligible for benefits, the deceased must have earned a certain number of " credits, " based on age at the time of death. A worker can earn up to four credits a year. <sep> (A) However, some veterans will require more credits for significant changes in work. For instance, a light-weight employee may earn around 20 credits a year for a sedentary job. (B) An employer can earn up to eight credits a year. [substeps] The amount of credits you must earn depends on the age of the deceased, the age of the child and the working salary-generally several credits. (C) This may be a number or a number that applies to the same year in which he lived. If you are in the united states, for example, you would need at least 3 credits to be eligible for benefits. (D) In 2015, a worker earned one credit for every $1 , 220 of wages or self-employed income. [substeps] The amount of credits needed will depend on the worker's age when he or she died.
D